M6 M8 M10 M16 Carbon Steel Metal Bolt Zinc Plated White Blue Black Square Head Bolt

Product Specifications

Name	Metal Bolt
Standard	DIN, ASME, ANSI, ISO
Material	carbon steel
Place of Origin	China
Finish	Polish, Passivation, Black, Galvanization, Chromate, Dacromet
Certificate	ISO9001:2008, ROHS
Used	Building Industry Machinery
Thread Type	Coarse, Fine
Usage	Fastening
Function	Connection, Fastening and Decoration
Strength	High
Size	Various sizes available
Measurement System	INCH, Metric system

Square head bolts (square head screws) are widely adopted fasteners in industries and construction projects. Their key feature is the square - shaped head, which brings multiple benefits. In terms of material, they can be made from various metals, and stainless steel (e.g., 18 - 8 (A2), A4, SUS304, SUS316, SUS316L) is a popular option. This material offers excellent corrosion resistance, making them suitable for harsh environments like marine or chemical plants. For example, in coastal areas with abundant saltwater, these bolts can resist corrosion and maintain their integrity over time. The square - head design allows for easy manual tightening or loosening with a wrench or socket. Unlike some round - headed bolts that may slip under torque, the flat surface of the square head provides a stable grip, facilitating installation and maintenance, especially in tight spaces or where power tools are not readily available. Square head bolts come in different sizes (e.g., M2, M8, M12, M16) and strength grades (e.g., A2 - 70, A2 - 80, A4 - 70, A4 - 80) to meet specific load - bearing requirements. High - strength square head bolts are often used in structural applications, such as building frameworks or heavy - machinery assembly, to ensure the stability and safety of the structure.

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